International
Tables for
Crystallography
Volume D
Physical properties of crystals
Edited by A. Authier

International Tables for Crystallography (2013). Vol. D, ch. 3.4, p. 487

Figure 3.4.2.2 

V. Janoveca* and J. Přívratskáb

aInstitute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, CZ-18221 Prague 8, Czech Republic, and bDepartment of Mathematics and Didactics of Mathematics, Technical University of Liberec, Hálkova 6, 461 17 Liberec 1, Czech Republic
Correspondence e-mail:  janovec@fzu.cz

[Figure 3.4.2.2]
Figure 3.4.2.2

Exploded view of single-domain states [{\bf S}_1], [{\bf S}_2], [{\bf S}_3] and [{\bf S}_4 ] (solid rectangles with arrows of spontaneous polarization) formed at a phase transition from a parent phase with symmetry [G=4_z/m_zm_xm_{xy} ] to a ferroic phase with symmetry [F_1=2_xm_ym_z]. The parent phase is represented by a dashed square in the centre with the symmetry elements of the parent group [G=4_z/m_zm_xm_{xy}] shown.